Search results for "Closed-shell"

showing 3 items of 3 documents

Translationally invariant coupled cluster method in coordinate space for nuclei

2002

We study a formulation of the translationally invariant coupled cluster method in coordinate space for finite nuclei. The new formulation remedies convergence problems that plagued previous calculations in configuration space. The method is applied to light nuclei using semi-realistic central interactions.

PhysicsLight nucleusNuclear and High Energy Physics/dk/atira/pure/subjectarea/asjc/3100/3106Nuclear structureInvariant (physics)Physics and Astronomy(all)Coupled clusterClassical mechanics/dk/atira/pure/subjectarea/asjc/3100Quantum electrodynamicsNuclear binding energyConfiguration spaceCLOSED-SHELL NUCLEI; MODEL-CALCULATIONS; CBF THEORY; DEPENDENT CORRELATIONS; PAIR CORRELATIONS; FINITE SYSTEMS; GROUND-STATE; JASTROW; O-16; Nuclear binding energy; Nuclear model; Nuclear structure; Nucleon-nucleon potential (formulation of translationally invariant coupled cluster method in coordinate space for closed shell nuclei within 0p-shell with use of semi-realistic central nucleon-nucleon interactions)Coordinate spaceGround state
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Translationally invariant treatment of pair correlations in nuclei - II. Tensor correlations

1998

We study the extension of our translationally invariant treatment of few-body nuclear systems to include tensor forces and correlations. It is shown that a direct application of our method is not as successful for realistic V6 interactions as our previous results for V4 potentials suggested. We investigate the cause in detail for the case of $^4$He, and show that a combination of our method with that of Jastrow-correlated wave functions seems to be a lot more powerful, thereby suggesting that for mildly to strongly repulsive forces such a hybrid procedure may be an appropriate description.

PhysicsNuclear and High Energy PhysicsCLOSED-SHELL NUCLEI; MONTE-CARLO CALCULATIONS; MODEL-CALCULATIONS; COORDINATE SPACE; CBF THEORY; POTENTIALS; CLUSTERS; SYSTEMS; STATE; HE-4Nuclear Theory/dk/atira/pure/subjectarea/asjc/3100/3106V6 forcesFOS: Physical sciencesFísicaInvariant (physics)A ≤ 16Translational invarianceNuclear Theory (nucl-th)Tensor correlationsJastrow correlationsWave functionMathematical physics
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Dibenzocycloheptatriene as end-group of Thiele and tetrabenzo-Chichibabin hydrocarbons

2020

The authors are grateful for the financial support from: MICIU/FEDER/AEI, Spain (PG2018-101181-B-I00, PGC2018-095808B-I00, MAT2016-80826-R, FIP-2018-HECTIC-PTM, Prometeo2019/076 and the "Severo Ochoa" Programme for Centres of Excellence in R & D; SEV-2015-0496), the European Research Council (ERC) (677023), DGR (Catalunya) (2017-SGR-918), and SNSF (Switzerland, TS., PZ00P2_174175). We thank the CSIRC-Alhambra and SciCore (Basel, Switzerland) for supercomputing facilities and the Servei de RMN, UAB, for instrument time.

SingletAggregation-induced emissionPolycyclic aromatic hydrocarbon010402 general chemistry01 natural sciencesCatalysisClosed-shellComputational chemistryMaterials ChemistrySinglet stateAggregation-induced emissionOpen shellchemistry.chemical_classification010405 organic chemistryChemistryDiradicalMetals and AlloysGeneral Chemistry3. Good health0104 chemical sciencesSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsEnd-groupTerminal (electronics)Ceramics and CompositesPolycyclic aromatic-hydrocarbon
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